blob: cc9e563f23aa6072d6160c9b33abe4c901bc1584 [file] [log] [blame]
Rabin Vincentb4ecd322010-05-10 23:39:47 +02001/*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * License Terms: GNU General Public License, version 2
5 * Author: Hanumath Prasad <hanumath.prasad@stericsson.com> for ST-Ericsson
6 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
7 */
8
9#include <linux/module.h>
10#include <linux/interrupt.h>
11#include <linux/irq.h>
Lee Jones15e27b12012-09-07 12:14:56 +010012#include <linux/irqdomain.h>
Rabin Vincentb4ecd322010-05-10 23:39:47 +020013#include <linux/slab.h>
14#include <linux/i2c.h>
Lee Jonesa435ae12012-09-07 12:14:57 +010015#include <linux/of.h>
Linus Walleija381b132014-01-23 13:43:28 +010016#include <linux/of_device.h>
Rabin Vincentb4ecd322010-05-10 23:39:47 +020017#include <linux/mfd/core.h>
Sundar Iyerc6eda6c2010-12-13 09:33:12 +053018#include <linux/mfd/tc3589x.h>
Linus Walleija381b132014-01-23 13:43:28 +010019#include <linux/err.h>
Rabin Vincentb4ecd322010-05-10 23:39:47 +020020
Linus Walleije64c1eb2013-10-18 11:51:45 +020021/**
22 * enum tc3589x_version - indicates the TC3589x version
23 */
24enum tc3589x_version {
25 TC3589X_TC35890,
26 TC3589X_TC35892,
27 TC3589X_TC35893,
28 TC3589X_TC35894,
29 TC3589X_TC35895,
30 TC3589X_TC35896,
31 TC3589X_UNKNOWN,
32};
33
Sundar Iyer593e9d72010-12-13 09:33:18 +053034#define TC3589x_CLKMODE_MODCTL_SLEEP 0x0
35#define TC3589x_CLKMODE_MODCTL_OPERATION (1 << 0)
36
Rabin Vincentb4ecd322010-05-10 23:39:47 +020037/**
Sundar Iyer20406eb2010-12-13 09:33:14 +053038 * tc3589x_reg_read() - read a single TC3589x register
39 * @tc3589x: Device to read from
Rabin Vincentb4ecd322010-05-10 23:39:47 +020040 * @reg: Register to read
41 */
Sundar Iyer20406eb2010-12-13 09:33:14 +053042int tc3589x_reg_read(struct tc3589x *tc3589x, u8 reg)
Rabin Vincentb4ecd322010-05-10 23:39:47 +020043{
44 int ret;
45
Sundar Iyer20406eb2010-12-13 09:33:14 +053046 ret = i2c_smbus_read_byte_data(tc3589x->i2c, reg);
Rabin Vincentb4ecd322010-05-10 23:39:47 +020047 if (ret < 0)
Sundar Iyer20406eb2010-12-13 09:33:14 +053048 dev_err(tc3589x->dev, "failed to read reg %#x: %d\n",
Rabin Vincentb4ecd322010-05-10 23:39:47 +020049 reg, ret);
50
51 return ret;
52}
Sundar Iyer20406eb2010-12-13 09:33:14 +053053EXPORT_SYMBOL_GPL(tc3589x_reg_read);
Rabin Vincentb4ecd322010-05-10 23:39:47 +020054
55/**
Julia Lawalld87814a2016-10-01 21:46:23 +020056 * tc3589x_reg_write() - write a single TC3589x register
Sundar Iyer20406eb2010-12-13 09:33:14 +053057 * @tc3589x: Device to write to
Rabin Vincentb4ecd322010-05-10 23:39:47 +020058 * @reg: Register to read
59 * @data: Value to write
60 */
Sundar Iyer20406eb2010-12-13 09:33:14 +053061int tc3589x_reg_write(struct tc3589x *tc3589x, u8 reg, u8 data)
Rabin Vincentb4ecd322010-05-10 23:39:47 +020062{
63 int ret;
64
Sundar Iyer20406eb2010-12-13 09:33:14 +053065 ret = i2c_smbus_write_byte_data(tc3589x->i2c, reg, data);
Rabin Vincentb4ecd322010-05-10 23:39:47 +020066 if (ret < 0)
Sundar Iyer20406eb2010-12-13 09:33:14 +053067 dev_err(tc3589x->dev, "failed to write reg %#x: %d\n",
Rabin Vincentb4ecd322010-05-10 23:39:47 +020068 reg, ret);
69
70 return ret;
71}
Sundar Iyer20406eb2010-12-13 09:33:14 +053072EXPORT_SYMBOL_GPL(tc3589x_reg_write);
Rabin Vincentb4ecd322010-05-10 23:39:47 +020073
74/**
Sundar Iyer20406eb2010-12-13 09:33:14 +053075 * tc3589x_block_read() - read multiple TC3589x registers
76 * @tc3589x: Device to read from
Rabin Vincentb4ecd322010-05-10 23:39:47 +020077 * @reg: First register
78 * @length: Number of registers
79 * @values: Buffer to write to
80 */
Sundar Iyer20406eb2010-12-13 09:33:14 +053081int tc3589x_block_read(struct tc3589x *tc3589x, u8 reg, u8 length, u8 *values)
Rabin Vincentb4ecd322010-05-10 23:39:47 +020082{
83 int ret;
84
Sundar Iyer20406eb2010-12-13 09:33:14 +053085 ret = i2c_smbus_read_i2c_block_data(tc3589x->i2c, reg, length, values);
Rabin Vincentb4ecd322010-05-10 23:39:47 +020086 if (ret < 0)
Sundar Iyer20406eb2010-12-13 09:33:14 +053087 dev_err(tc3589x->dev, "failed to read regs %#x: %d\n",
Rabin Vincentb4ecd322010-05-10 23:39:47 +020088 reg, ret);
89
90 return ret;
91}
Sundar Iyer20406eb2010-12-13 09:33:14 +053092EXPORT_SYMBOL_GPL(tc3589x_block_read);
Rabin Vincentb4ecd322010-05-10 23:39:47 +020093
94/**
Sundar Iyer20406eb2010-12-13 09:33:14 +053095 * tc3589x_block_write() - write multiple TC3589x registers
96 * @tc3589x: Device to write to
Rabin Vincentb4ecd322010-05-10 23:39:47 +020097 * @reg: First register
98 * @length: Number of registers
99 * @values: Values to write
100 */
Sundar Iyer20406eb2010-12-13 09:33:14 +0530101int tc3589x_block_write(struct tc3589x *tc3589x, u8 reg, u8 length,
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200102 const u8 *values)
103{
104 int ret;
105
Sundar Iyer20406eb2010-12-13 09:33:14 +0530106 ret = i2c_smbus_write_i2c_block_data(tc3589x->i2c, reg, length,
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200107 values);
108 if (ret < 0)
Sundar Iyer20406eb2010-12-13 09:33:14 +0530109 dev_err(tc3589x->dev, "failed to write regs %#x: %d\n",
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200110 reg, ret);
111
112 return ret;
113}
Sundar Iyer20406eb2010-12-13 09:33:14 +0530114EXPORT_SYMBOL_GPL(tc3589x_block_write);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200115
116/**
Sundar Iyer20406eb2010-12-13 09:33:14 +0530117 * tc3589x_set_bits() - set the value of a bitfield in a TC3589x register
118 * @tc3589x: Device to write to
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200119 * @reg: Register to write
120 * @mask: Mask of bits to set
Julia Lawalld87814a2016-10-01 21:46:23 +0200121 * @val: Value to set
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200122 */
Sundar Iyer20406eb2010-12-13 09:33:14 +0530123int tc3589x_set_bits(struct tc3589x *tc3589x, u8 reg, u8 mask, u8 val)
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200124{
125 int ret;
126
Sundar Iyer20406eb2010-12-13 09:33:14 +0530127 mutex_lock(&tc3589x->lock);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200128
Sundar Iyer20406eb2010-12-13 09:33:14 +0530129 ret = tc3589x_reg_read(tc3589x, reg);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200130 if (ret < 0)
131 goto out;
132
133 ret &= ~mask;
134 ret |= val;
135
Sundar Iyer20406eb2010-12-13 09:33:14 +0530136 ret = tc3589x_reg_write(tc3589x, reg, ret);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200137
138out:
Sundar Iyer20406eb2010-12-13 09:33:14 +0530139 mutex_unlock(&tc3589x->lock);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200140 return ret;
141}
Sundar Iyer20406eb2010-12-13 09:33:14 +0530142EXPORT_SYMBOL_GPL(tc3589x_set_bits);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200143
144static struct resource gpio_resources[] = {
145 {
Sundar Iyer20406eb2010-12-13 09:33:14 +0530146 .start = TC3589x_INT_GPIIRQ,
147 .end = TC3589x_INT_GPIIRQ,
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200148 .flags = IORESOURCE_IRQ,
149 },
150};
151
Sundar Iyer09c730a2010-12-21 15:53:31 +0530152static struct resource keypad_resources[] = {
153 {
154 .start = TC3589x_INT_KBDIRQ,
155 .end = TC3589x_INT_KBDIRQ,
156 .flags = IORESOURCE_IRQ,
157 },
158};
159
Geert Uytterhoevenafb580a2013-11-18 14:33:03 +0100160static const struct mfd_cell tc3589x_dev_gpio[] = {
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200161 {
Sundar Iyer20406eb2010-12-13 09:33:14 +0530162 .name = "tc3589x-gpio",
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200163 .num_resources = ARRAY_SIZE(gpio_resources),
164 .resources = &gpio_resources[0],
Linus Walleija381b132014-01-23 13:43:28 +0100165 .of_compatible = "toshiba,tc3589x-gpio",
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200166 },
167};
168
Geert Uytterhoevenafb580a2013-11-18 14:33:03 +0100169static const struct mfd_cell tc3589x_dev_keypad[] = {
Sundar Iyer09c730a2010-12-21 15:53:31 +0530170 {
171 .name = "tc3589x-keypad",
172 .num_resources = ARRAY_SIZE(keypad_resources),
173 .resources = &keypad_resources[0],
Linus Walleija381b132014-01-23 13:43:28 +0100174 .of_compatible = "toshiba,tc3589x-keypad",
Sundar Iyer09c730a2010-12-21 15:53:31 +0530175 },
176};
177
Sundar Iyer20406eb2010-12-13 09:33:14 +0530178static irqreturn_t tc3589x_irq(int irq, void *data)
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200179{
Sundar Iyer20406eb2010-12-13 09:33:14 +0530180 struct tc3589x *tc3589x = data;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200181 int status;
182
Sundar Iyerbd77efd2010-12-13 09:33:16 +0530183again:
Sundar Iyer20406eb2010-12-13 09:33:14 +0530184 status = tc3589x_reg_read(tc3589x, TC3589x_IRQST);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200185 if (status < 0)
186 return IRQ_NONE;
187
188 while (status) {
189 int bit = __ffs(status);
Lee Jones15e27b12012-09-07 12:14:56 +0100190 int virq = irq_create_mapping(tc3589x->domain, bit);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200191
Lee Jones15e27b12012-09-07 12:14:56 +0100192 handle_nested_irq(virq);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200193 status &= ~(1 << bit);
194 }
195
196 /*
197 * A dummy read or write (to any register) appears to be necessary to
198 * have the last interrupt clear (for example, GPIO IC write) take
Sundar Iyerbd77efd2010-12-13 09:33:16 +0530199 * effect. In such a case, recheck for any interrupt which is still
200 * pending.
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200201 */
Sundar Iyerbd77efd2010-12-13 09:33:16 +0530202 status = tc3589x_reg_read(tc3589x, TC3589x_IRQST);
203 if (status)
204 goto again;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200205
206 return IRQ_HANDLED;
207}
208
Lee Jones15e27b12012-09-07 12:14:56 +0100209static int tc3589x_irq_map(struct irq_domain *d, unsigned int virq,
210 irq_hw_number_t hwirq)
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200211{
Lee Jones15e27b12012-09-07 12:14:56 +0100212 struct tc3589x *tc3589x = d->host_data;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200213
Lee Jones15e27b12012-09-07 12:14:56 +0100214 irq_set_chip_data(virq, tc3589x);
215 irq_set_chip_and_handler(virq, &dummy_irq_chip,
216 handle_edge_irq);
217 irq_set_nested_thread(virq, 1);
Lee Jones15e27b12012-09-07 12:14:56 +0100218 irq_set_noprobe(virq);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200219
220 return 0;
221}
222
Lee Jones15e27b12012-09-07 12:14:56 +0100223static void tc3589x_irq_unmap(struct irq_domain *d, unsigned int virq)
224{
Lee Jones15e27b12012-09-07 12:14:56 +0100225 irq_set_chip_and_handler(virq, NULL, NULL);
226 irq_set_chip_data(virq, NULL);
227}
228
Krzysztof Kozlowski7ce7b262015-04-27 21:54:13 +0900229static const struct irq_domain_ops tc3589x_irq_ops = {
Linus Walleij1f0529b2013-01-02 14:40:14 +0100230 .map = tc3589x_irq_map,
Lee Jones15e27b12012-09-07 12:14:56 +0100231 .unmap = tc3589x_irq_unmap,
Linus Walleij627918e2014-06-10 14:31:32 +0200232 .xlate = irq_domain_xlate_onecell,
Lee Jones15e27b12012-09-07 12:14:56 +0100233};
234
Lee Jonesa435ae12012-09-07 12:14:57 +0100235static int tc3589x_irq_init(struct tc3589x *tc3589x, struct device_node *np)
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200236{
Linus Walleij1f0529b2013-01-02 14:40:14 +0100237 tc3589x->domain = irq_domain_add_simple(
Linus Walleij90f2d0f2014-10-28 11:06:56 +0100238 np, TC3589x_NR_INTERNAL_IRQS, 0,
Linus Walleij1f0529b2013-01-02 14:40:14 +0100239 &tc3589x_irq_ops, tc3589x);
Lee Jones15e27b12012-09-07 12:14:56 +0100240
241 if (!tc3589x->domain) {
242 dev_err(tc3589x->dev, "Failed to create irqdomain\n");
243 return -ENOSYS;
244 }
245
246 return 0;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200247}
248
Sundar Iyer20406eb2010-12-13 09:33:14 +0530249static int tc3589x_chip_init(struct tc3589x *tc3589x)
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200250{
251 int manf, ver, ret;
252
Sundar Iyer20406eb2010-12-13 09:33:14 +0530253 manf = tc3589x_reg_read(tc3589x, TC3589x_MANFCODE);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200254 if (manf < 0)
255 return manf;
256
Sundar Iyer20406eb2010-12-13 09:33:14 +0530257 ver = tc3589x_reg_read(tc3589x, TC3589x_VERSION);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200258 if (ver < 0)
259 return ver;
260
Sundar Iyer20406eb2010-12-13 09:33:14 +0530261 if (manf != TC3589x_MANFCODE_MAGIC) {
262 dev_err(tc3589x->dev, "unknown manufacturer: %#x\n", manf);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200263 return -EINVAL;
264 }
265
Sundar Iyer20406eb2010-12-13 09:33:14 +0530266 dev_info(tc3589x->dev, "manufacturer: %#x, version: %#x\n", manf, ver);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200267
Sundar Iyer523bc382010-12-13 09:33:17 +0530268 /*
269 * Put everything except the IRQ module into reset;
270 * also spare the GPIO module for any pin initialization
271 * done during pre-kernel boot
272 */
Sundar Iyer20406eb2010-12-13 09:33:14 +0530273 ret = tc3589x_reg_write(tc3589x, TC3589x_RSTCTRL,
274 TC3589x_RSTCTRL_TIMRST
275 | TC3589x_RSTCTRL_ROTRST
Sundar Iyer523bc382010-12-13 09:33:17 +0530276 | TC3589x_RSTCTRL_KBDRST);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200277 if (ret < 0)
278 return ret;
279
280 /* Clear the reset interrupt. */
Sundar Iyer20406eb2010-12-13 09:33:14 +0530281 return tc3589x_reg_write(tc3589x, TC3589x_RSTINTCLR, 0x1);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200282}
283
Bill Pembertonf791be42012-11-19 13:23:04 -0500284static int tc3589x_device_init(struct tc3589x *tc3589x)
Sundar Iyer611b7592010-12-13 09:33:15 +0530285{
286 int ret = 0;
287 unsigned int blocks = tc3589x->pdata->block;
288
289 if (blocks & TC3589x_BLOCK_GPIO) {
290 ret = mfd_add_devices(tc3589x->dev, -1, tc3589x_dev_gpio,
Mark Brown55692af2012-09-11 15:16:36 +0800291 ARRAY_SIZE(tc3589x_dev_gpio), NULL,
Linus Walleij90f2d0f2014-10-28 11:06:56 +0100292 0, tc3589x->domain);
Sundar Iyer611b7592010-12-13 09:33:15 +0530293 if (ret) {
294 dev_err(tc3589x->dev, "failed to add gpio child\n");
295 return ret;
296 }
297 dev_info(tc3589x->dev, "added gpio block\n");
298 }
299
Sundar Iyer09c730a2010-12-21 15:53:31 +0530300 if (blocks & TC3589x_BLOCK_KEYPAD) {
301 ret = mfd_add_devices(tc3589x->dev, -1, tc3589x_dev_keypad,
Mark Brown55692af2012-09-11 15:16:36 +0800302 ARRAY_SIZE(tc3589x_dev_keypad), NULL,
Linus Walleij90f2d0f2014-10-28 11:06:56 +0100303 0, tc3589x->domain);
Sundar Iyer09c730a2010-12-21 15:53:31 +0530304 if (ret) {
305 dev_err(tc3589x->dev, "failed to keypad child\n");
306 return ret;
307 }
308 dev_info(tc3589x->dev, "added keypad block\n");
309 }
Sundar Iyer611b7592010-12-13 09:33:15 +0530310
Sundar Iyer09c730a2010-12-21 15:53:31 +0530311 return ret;
Sundar Iyer611b7592010-12-13 09:33:15 +0530312}
313
Linus Walleija381b132014-01-23 13:43:28 +0100314static const struct of_device_id tc3589x_match[] = {
315 /* Legacy compatible string */
316 { .compatible = "tc3589x", .data = (void *) TC3589X_UNKNOWN },
317 { .compatible = "toshiba,tc35890", .data = (void *) TC3589X_TC35890 },
318 { .compatible = "toshiba,tc35892", .data = (void *) TC3589X_TC35892 },
319 { .compatible = "toshiba,tc35893", .data = (void *) TC3589X_TC35893 },
320 { .compatible = "toshiba,tc35894", .data = (void *) TC3589X_TC35894 },
321 { .compatible = "toshiba,tc35895", .data = (void *) TC3589X_TC35895 },
322 { .compatible = "toshiba,tc35896", .data = (void *) TC3589X_TC35896 },
323 { }
324};
325
326MODULE_DEVICE_TABLE(of, tc3589x_match);
327
328static struct tc3589x_platform_data *
329tc3589x_of_probe(struct device *dev, enum tc3589x_version *version)
Lee Jonesa435ae12012-09-07 12:14:57 +0100330{
Linus Walleija381b132014-01-23 13:43:28 +0100331 struct device_node *np = dev->of_node;
332 struct tc3589x_platform_data *pdata;
Lee Jonesa435ae12012-09-07 12:14:57 +0100333 struct device_node *child;
Linus Walleija381b132014-01-23 13:43:28 +0100334 const struct of_device_id *of_id;
335
336 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
337 if (!pdata)
338 return ERR_PTR(-ENOMEM);
339
340 of_id = of_match_device(tc3589x_match, dev);
341 if (!of_id)
342 return ERR_PTR(-ENODEV);
343 *version = (enum tc3589x_version) of_id->data;
Lee Jonesa435ae12012-09-07 12:14:57 +0100344
345 for_each_child_of_node(np, child) {
Linus Walleija381b132014-01-23 13:43:28 +0100346 if (of_device_is_compatible(child, "toshiba,tc3589x-gpio"))
Lee Jonesa435ae12012-09-07 12:14:57 +0100347 pdata->block |= TC3589x_BLOCK_GPIO;
Linus Walleija381b132014-01-23 13:43:28 +0100348 if (of_device_is_compatible(child, "toshiba,tc3589x-keypad"))
Lee Jonesa435ae12012-09-07 12:14:57 +0100349 pdata->block |= TC3589x_BLOCK_KEYPAD;
Lee Jonesa435ae12012-09-07 12:14:57 +0100350 }
351
Linus Walleija381b132014-01-23 13:43:28 +0100352 return pdata;
Lee Jonesa435ae12012-09-07 12:14:57 +0100353}
354
Bill Pembertonf791be42012-11-19 13:23:04 -0500355static int tc3589x_probe(struct i2c_client *i2c,
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200356 const struct i2c_device_id *id)
357{
Lee Jonesa435ae12012-09-07 12:14:57 +0100358 struct device_node *np = i2c->dev.of_node;
Linus Walleija381b132014-01-23 13:43:28 +0100359 struct tc3589x_platform_data *pdata = dev_get_platdata(&i2c->dev);
Sundar Iyer20406eb2010-12-13 09:33:14 +0530360 struct tc3589x *tc3589x;
Linus Walleija381b132014-01-23 13:43:28 +0100361 enum tc3589x_version version;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200362 int ret;
363
Lee Jonesa435ae12012-09-07 12:14:57 +0100364 if (!pdata) {
Linus Walleija381b132014-01-23 13:43:28 +0100365 pdata = tc3589x_of_probe(&i2c->dev, &version);
366 if (IS_ERR(pdata)) {
Lee Jonesa435ae12012-09-07 12:14:57 +0100367 dev_err(&i2c->dev, "No platform data or DT found\n");
Linus Walleija381b132014-01-23 13:43:28 +0100368 return PTR_ERR(pdata);
Lee Jonesa435ae12012-09-07 12:14:57 +0100369 }
Linus Walleija381b132014-01-23 13:43:28 +0100370 } else {
371 /* When not probing from device tree we have this ID */
372 version = id->driver_data;
Lee Jonesa435ae12012-09-07 12:14:57 +0100373 }
374
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200375 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA
376 | I2C_FUNC_SMBUS_I2C_BLOCK))
377 return -EIO;
378
Jingoo Han1383e002013-02-20 18:31:52 +0900379 tc3589x = devm_kzalloc(&i2c->dev, sizeof(struct tc3589x),
380 GFP_KERNEL);
Sundar Iyer20406eb2010-12-13 09:33:14 +0530381 if (!tc3589x)
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200382 return -ENOMEM;
383
Sundar Iyer20406eb2010-12-13 09:33:14 +0530384 mutex_init(&tc3589x->lock);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200385
Sundar Iyer20406eb2010-12-13 09:33:14 +0530386 tc3589x->dev = &i2c->dev;
387 tc3589x->i2c = i2c;
388 tc3589x->pdata = pdata;
Linus Walleije64c1eb2013-10-18 11:51:45 +0200389
Linus Walleija381b132014-01-23 13:43:28 +0100390 switch (version) {
Linus Walleije64c1eb2013-10-18 11:51:45 +0200391 case TC3589X_TC35893:
392 case TC3589X_TC35895:
393 case TC3589X_TC35896:
394 tc3589x->num_gpio = 20;
395 break;
396 case TC3589X_TC35890:
397 case TC3589X_TC35892:
398 case TC3589X_TC35894:
399 case TC3589X_UNKNOWN:
400 default:
401 tc3589x->num_gpio = 24;
402 break;
403 }
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200404
Sundar Iyer20406eb2010-12-13 09:33:14 +0530405 i2c_set_clientdata(i2c, tc3589x);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200406
Sundar Iyer20406eb2010-12-13 09:33:14 +0530407 ret = tc3589x_chip_init(tc3589x);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200408 if (ret)
Jingoo Han1383e002013-02-20 18:31:52 +0900409 return ret;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200410
Lee Jonesa435ae12012-09-07 12:14:57 +0100411 ret = tc3589x_irq_init(tc3589x, np);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200412 if (ret)
Jingoo Han1383e002013-02-20 18:31:52 +0900413 return ret;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200414
Sundar Iyer20406eb2010-12-13 09:33:14 +0530415 ret = request_threaded_irq(tc3589x->i2c->irq, NULL, tc3589x_irq,
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200416 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
Sundar Iyer20406eb2010-12-13 09:33:14 +0530417 "tc3589x", tc3589x);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200418 if (ret) {
Sundar Iyer20406eb2010-12-13 09:33:14 +0530419 dev_err(tc3589x->dev, "failed to request IRQ: %d\n", ret);
Jingoo Han1383e002013-02-20 18:31:52 +0900420 return ret;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200421 }
422
Sundar Iyer611b7592010-12-13 09:33:15 +0530423 ret = tc3589x_device_init(tc3589x);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200424 if (ret) {
Sundar Iyer611b7592010-12-13 09:33:15 +0530425 dev_err(tc3589x->dev, "failed to add child devices\n");
Jingoo Han1383e002013-02-20 18:31:52 +0900426 return ret;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200427 }
428
429 return 0;
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200430}
431
Bill Pemberton4740f732012-11-19 13:26:01 -0500432static int tc3589x_remove(struct i2c_client *client)
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200433{
Sundar Iyer20406eb2010-12-13 09:33:14 +0530434 struct tc3589x *tc3589x = i2c_get_clientdata(client);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200435
Sundar Iyer20406eb2010-12-13 09:33:14 +0530436 mfd_remove_devices(tc3589x->dev);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200437
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200438 return 0;
439}
440
Axel Lin930bf022012-07-02 17:19:52 +0800441#ifdef CONFIG_PM_SLEEP
Sundar Iyer593e9d72010-12-13 09:33:18 +0530442static int tc3589x_suspend(struct device *dev)
443{
444 struct tc3589x *tc3589x = dev_get_drvdata(dev);
445 struct i2c_client *client = tc3589x->i2c;
446 int ret = 0;
447
448 /* put the system to sleep mode */
449 if (!device_may_wakeup(&client->dev))
450 ret = tc3589x_reg_write(tc3589x, TC3589x_CLKMODE,
451 TC3589x_CLKMODE_MODCTL_SLEEP);
452
453 return ret;
454}
455
456static int tc3589x_resume(struct device *dev)
457{
458 struct tc3589x *tc3589x = dev_get_drvdata(dev);
459 struct i2c_client *client = tc3589x->i2c;
460 int ret = 0;
461
462 /* enable the system into operation */
463 if (!device_may_wakeup(&client->dev))
464 ret = tc3589x_reg_write(tc3589x, TC3589x_CLKMODE,
465 TC3589x_CLKMODE_MODCTL_OPERATION);
466
467 return ret;
468}
Linus Walleij54d8e2c2011-08-09 20:37:17 +0200469#endif
Sundar Iyer593e9d72010-12-13 09:33:18 +0530470
Axel Lin930bf022012-07-02 17:19:52 +0800471static SIMPLE_DEV_PM_OPS(tc3589x_dev_pm_ops, tc3589x_suspend, tc3589x_resume);
472
Sundar Iyer20406eb2010-12-13 09:33:14 +0530473static const struct i2c_device_id tc3589x_id[] = {
Linus Walleije64c1eb2013-10-18 11:51:45 +0200474 { "tc35890", TC3589X_TC35890 },
475 { "tc35892", TC3589X_TC35892 },
476 { "tc35893", TC3589X_TC35893 },
477 { "tc35894", TC3589X_TC35894 },
478 { "tc35895", TC3589X_TC35895 },
479 { "tc35896", TC3589X_TC35896 },
480 { "tc3589x", TC3589X_UNKNOWN },
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200481 { }
482};
Sundar Iyer20406eb2010-12-13 09:33:14 +0530483MODULE_DEVICE_TABLE(i2c, tc3589x_id);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200484
Sundar Iyer20406eb2010-12-13 09:33:14 +0530485static struct i2c_driver tc3589x_driver = {
Linus Walleija381b132014-01-23 13:43:28 +0100486 .driver = {
487 .name = "tc3589x",
Linus Walleija381b132014-01-23 13:43:28 +0100488 .pm = &tc3589x_dev_pm_ops,
489 .of_match_table = of_match_ptr(tc3589x_match),
490 },
Sundar Iyer20406eb2010-12-13 09:33:14 +0530491 .probe = tc3589x_probe,
Bill Pemberton84449212012-11-19 13:20:24 -0500492 .remove = tc3589x_remove,
Sundar Iyer20406eb2010-12-13 09:33:14 +0530493 .id_table = tc3589x_id,
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200494};
495
Sundar Iyer20406eb2010-12-13 09:33:14 +0530496static int __init tc3589x_init(void)
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200497{
Sundar Iyer20406eb2010-12-13 09:33:14 +0530498 return i2c_add_driver(&tc3589x_driver);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200499}
Sundar Iyer20406eb2010-12-13 09:33:14 +0530500subsys_initcall(tc3589x_init);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200501
Sundar Iyer20406eb2010-12-13 09:33:14 +0530502static void __exit tc3589x_exit(void)
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200503{
Sundar Iyer20406eb2010-12-13 09:33:14 +0530504 i2c_del_driver(&tc3589x_driver);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200505}
Sundar Iyer20406eb2010-12-13 09:33:14 +0530506module_exit(tc3589x_exit);
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200507
508MODULE_LICENSE("GPL v2");
Sundar Iyer20406eb2010-12-13 09:33:14 +0530509MODULE_DESCRIPTION("TC3589x MFD core driver");
Rabin Vincentb4ecd322010-05-10 23:39:47 +0200510MODULE_AUTHOR("Hanumath Prasad, Rabin Vincent");